Ohm’s Law states that the electrical current flowing through a conductor is directly proportional to the voltage applied across it and inversely proportional to its resistance. Mathematically, this foundational principle of electronics is expressed by the core formula V = I × R. The Three Core Formulas
You can rearrange the relationship to solve for any of the three variables. Engineers often use an Ohm’s Law Triangle as a visual memory anchor—cover the variable you want to find to reveal the formula.
Voltage (V): Measured in Volts (V). It is the electrical pressure forcing the charge to flow.
Current (I): Measured in Amperes or Amps (A). It is the actual flow rate of the electrons.
Resistance ®: Measured in Ohms (Ω). It is the opposition to the flow of current. Ohm’s Law Explanation – BYJU’S
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